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【題目】-The cars give off a great deal of waste gas in the street.

-Yes, but I'm sure something will be done to __________ air pollution.

A. reduce B. remove

C. collect D. warn

【答案】A

【解析】句意:——汽車放出大量的廢氣在街上。——是的，但是我確信未來會采取措施來減少空氣污染。reduce減少，降低，縮小；remove移動，搬開；collect收集，募捐；warn警告，提醒。

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